use GET to wait, not HEAD

Signed-off-by: Artur Neumann <[email protected]>

Author: individual-it

.github/workflows/ci.yml

@@ -122,7 +122,7 @@ jobs:
       - name: wait on OpenProject
         uses: iFaxity/wait-on-action@v1
         with:
-          resource: http://localhost:8081/api/v3/
+          resource: http-get://localhost:8081/api/v3/
           timeout: 240000
 
       - name: try OpenProject